import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton

def main():
    app = QApplication(sys.argv)
    window = QWidget()
    window.setWindowTitle('Hello PyQt5')
    window.resize(400, 300)
    window.show()
    sys.exit(app.exec_()) 

if __name__ == '__main__':
    print(1+1)
    main()




